Lubricating system for internal combustion engines



March 3, 1936. R p WRlGHT 2,932,823

LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed July 19, 1933 2 Sheets-$heet l 1? J4 1 Jo? March 3, 1936.

R. P. WRIGHT 2,032,823 LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed July 19, 1955 2 Sheets-Sheet 2 62 g I a- 'iiiliih: G: Min .w w-/\=4 ;lu 7 696' Patented Mar. 3, 1936 :U N! T E D 'S T S PATENT OF FliC- E LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES ,Rea P. Wright, Chevy Chase, Md., assignor to Emerol' Manufacturing 00., New York, N. Y., a corporation of. Illinois Application July :19, 1933,), Serial No. 681,198

14 Claims. (01. 123-196) This. invention relates to certain new and usein- Figure 1,; l "indicates an internal combustion iulz improvements in lubricating system for inengine 2, an intake manifold having, a riser13 :ternal combustion engines and is a companion connected thereto forming the induction passage application of an application Serial Nun-her for the engine and;=to wh chis connected a 681,197, filed July 19, 1933, the main object of charge-forming device 4' herein shown ,oithe the invention being to provide a positive moans .Marvel type .whereina suction operated valve 5 for actuating a valve for controlling the supply is carried by a pivoted shaftyli, which shaft is of lubricant by the movement of the suction conextended through suitable bossesc on the outer trolled valve of the charge forming device. casing of the carburetor; and carries a collar 1 m .Another object of my invention is to provide iadjustably mountedlonithessha'ftcby'a set screw alubricating system for internal combustion en- -8, Vwhich collar is providedwith ,acam 9' for the ,gines which is so constructed that the lubricant purpose hereinafter fully described.

can be, supplied either by gravity or by suction, The .wall .of the; carburetingi passage of the a valve being disposed between the induction charge forming device is provided with a pipe of the internal combustion engine and the threaded bore 110 into -..whi ch is threaded la source of supply, which valve is normally held threaded nipple H which extends from a valve closedand'is adapted to be opened by the movecasing l2 which is providedwitha valve seat vinent of thesuction operated valve so that the i3 onwhich is seateda valve I lv which isnorlubricant will besupplied when the valve moves mally heldcin closed position byaspring l51and a predetermined distance whereby lubricant will is provided with ,a valve stem: l6, extendingiout 20 be only supplied to the pistons and valves ofthe through a stuffing box |'I:-at;one end of the casing -.internalcombustion engine after the engine has and disposed inthe pathof the gtravelof thecam -reached .a certain speed. 9 carriedr-bvthe stem' 6 of thesuctionoperated A still-Jfurtherrobjectl of the invention is to valve 5 whereby when the suction-operated-valve provide a novel construction of valve and manopens a predetermined-1 distance,; the cam -will;,be

v ner of operating the same. brought into,- engagementwiththe valvestein 16 Other and further objects'and advantages of so as to move the valveofi its seat ion the-purtheinvention will be hereinafter set forth and pose hereinafter fully-described.

the novel ieatures thereof defined by'the ap- Connected to ,the valve casing in,- ani -inlet 3Q pended claims. conduit IB extending; home-reservoir; l9, which In the drawings, is adapted to contain the-lubricantisovathat-the Figure l is a side elevation of an internal lubricant will flow; by,gra vity; through the concombustion engine showing the application of duit l8, valvelcasing l2,v0ut;;,the nipplei Ill-into my improved construction of lubricating system thecarbureting; passage whereigit willebe taken thereto wherein a reservoir is arranged, to supup=-by the air; and fuel, mixture passing .there ply-lubricantby gravity to the carbureting pasthrough and-delivered intogther cylinders of the sage of thecharge forming device; engine so; as ,to thoroughly-j lubricate-theppistons Figure :2 is a section taken on line 2-2 of and -Valves -thereof. Figure 1; By havin :the, cam 97 adjustably. ,-mounted: on 1 Figure 3 is a longitudinal section through the the shaft-'carryingithe SllGtiOl'LOPGI'QtBdxVElVQVE 40 valve for, controlling the supply of lubricant; can besetin respecttol-zthe valve stem It so that Figure 4 is .a detail view partly broken away it opens :a predetermined distance before it showing a modified form of valve and means for strikes the valve stem whereby the lubricating supplyingilubricant thereto; system will be brought ,into, operationuaiter the .5 Figure-5 is a longitudinal section through a engine 1 to which the device is attached valve constructed in accordance with. the disreached a predetermined speed.

closure of Figure 4 showing its connection to the This provides a constructionwherein:lubricant carbureting passage and the suction operated is supplied to the induction; pipe =ofz an internal valve; combustion engine and is carried .withthe-explo- 0 Figure 6 is a side elevation partly broken away sive charge into the cylinders so as toz lubricate showing another form of valve and its connecthe top; of thepistons; and valves and while I tion to the suction operated valve; and haveshown-a-reservoir arranged to supplylubri- Figure '7 is an enlarged vertical section through cent to the carbureting passageiofiitheicharge the valve. forming devicefb-y' gravity, it ;is, .,,ofv course, under- @Inthe embodimentof =my -inventionqas; shown .stood; thatthe {lubricant reservoirccan. be artions valvestems 40 and 4|.

vided with a valve seat 38 on ranged in a plane below the charge forming device as disclosed in another embodiment of my invention whereby lubricant will be drawn by suction when the valve is opened into the carbureting passage. t

In the embodiment of my invention as shown in Figure 4, indicates a charge forming device of the Marvel type having a pivoted suction operated valve 2| adapted to open by the suction created by the piston displacement. The charge forming device is adapted to be connected to the intake manifold of the internal combustion engine by an induction pipe 22.

Disposed adjacent the charge forming device is a valve casing 23 from which extends a conduit 24 from a reservoir 25 adapted to contain lubricant. The valve casing 23 is provided with a valve seat 26 engaged by a valve 21 held against its seat by a spring 28 and provided with a stem 29 extending through a stufiing box 30 formed in the valve casing. The valve casing is provided with an outlet pipe 3| which communicates with the carbureting passage of the charge forming device as clearly shown and through which lubricant is adapted to be drawn by suction when the valve 21 is moved on its seat. The valve stem 29 extends through a stuffing box 32 disposed in a bore formed in the wall of the carbureting passage and is connected to the suction operated valve 2| by a flexible connection 33 herein shown in the form of a chain with a lost motion connection which allows the suction operated valve to move a predetermined distance before it moves the valve 21 to open communication between the carbureting passage and the lubricant reservoir 25.

While I have shown and described a reservoir 25 arranged in a plane below the carbureter from which lubricant is adapted to be drawn by suction, it is, of course, understood that the reservoir could be arranged in a plane above the charge forming device as disclosed in Figure 1 so as to allow the lubricant to flow by gravity through the conduit leading to the carbureting passage when the valve is moved into open position and therefore I do not wish to limit myself to the use of a lubricant reservoir" disposed at any particular position as I am aware that my improved system of lubricating an internal combustion engine will operate satisfactorily when the reservoir is arranged either in a plane above the carbureter or in a plane below the carbureter.

In the embodiment of my invention as shown in Figures 6 and 7, 34 indicates acharge forming device of the Marvel type which is provided with a suction operated valve 35 and is adapted to be connected to the induction pipe 36 of the internal combustion engine.-- Connected to the charge forming device is a valve casing 31 prowhich is seated a in opposite direc- The valve casing is provided with an inlet pipe 42 extending from the source of supply such as a reservoir either disposed in a. plane above the charge forming device or in a plane below so that the lubricant will valve 39' which has extended either flow by gravity or be drawn by suction through the valve casing as will be hereinafter fully described.

The valve casing herein shown disposed in an opening is disposed against the outer wall, of the carbureting passage and is provided with an internally threaded bore 43 in which is screwed an externally threaded nipple 44 which extends into a bore formed in the wall of the carbureting passage for connecting the valve casing to the charge forming device, said nipple forming a stop for coil spring 45 which normally holds the valve 39 on its seat.

The valve stem 4| is flexibly connected to the suction operated valve 35 by a flexible connection 46 herein shown in the form of a chain whereby the opening of the suction operated valve will move the valve 39 off its seat in order to allow the lubricant to be drawn or flow by gravity through the valve casing and be discharged into the carbureting passage of the charge forming device.

It will be noted that the valve stem 4| extends through the nipple 44 and forms an annular passage surrounding the valve stem so as to form a self cleaning opening so as to remove any foreign matter which is drawn through the valve casing as the valve is moved into open and closed. position. ing box 41 at the opposite end of the valve casing and the projected end forms means for manually operating the valve when it is desired to clean the discharge nipple or to allow lubricant to be drawn within the carbureting passage.

In this construction the lubricant is either supplied by gravity from a reservoir arranged in a plane above the charge forming device or from a reservoir arranged below the plane of the charge forming device and by having the valve constructed in this manner, it will be opened after the suction operated valve opens to a predetermined distance whereby the lubricant will be supplied to the induction pipe of the engine with the explosive charge so that the cylinders and pistons will be thoroughly lubricated. By having the valve stem 4| extended so that it can be manually operated if a valve of the engine should become stuck for any unknown reason, the valve can be operated so as to admit lubricant when the engine is running at low speed.

In the operation of all of the constructions herein shown, the supply of lubricant is positively controlled by a valve which completely cuts off the lubricant supply until the engine reaches a predetermined speed, at which time the move- 'ment of the suction operated valve opens the valve so as to bring into communication'the source of supply with the carbureting passage whereby lubricant will be drawn by the suction of the en- I gine into the cylinders so as to lubricate the top of the pistons and the valves of the engine and therefore Ido not wish to'limit myself to the use of a supply of lubricant located at any desired position as it is apparent that with positive means i for closing or cutting off the lubricant supplied, a. gravity feed system can be used. While I have only shown one form of valve for this purpose, it

is, of course, understood that various forms of valves can be used and that the construction of valve will be such that it is calibrated to allow a predetermined amount of lubricant to pass through the valve when it is in full open position or if desired, a metering valve can be employed which meters the amount of lubricant supplied to the engine and by the use of such a construction, the metering valve would gradually increase the supply of lubricant as the speed of the engine increases. v V I WhatIclaimis: 7

1. In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and The valve stem 4| extends through a stuifvalve for regulating the passage of explosive mixture to said engine, means for introducing a lubricant into the carbureting passage of said charge forming device and means for positively controlling the admission of lubricant to said carbureting passage by the movement of said suction controlled valve.

2. In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto provided with a suction controlled valve, of a source of lubricant supply in communication with the carbureting passage of said charge forming device through a valve controlled passage, means for positively operating said valve controlled by the movement of said suction operated valve.

3. In a device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination with a carbureter having a carbureting passage through which the explosive mixture is adapted to pass, a suction operated valve, a source of lubricant supply in communication with said carbureting passage, a valve for controlling the passage of lubricant therethrough, and means for positively operating said valve controlled by the movement of said suction operated valve.

4. In a device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage provided with a suction controlled valve, a source of lubricant supply in communication with said carbureting passage, a normally closed valve for controlling the passage of lubricant from a source of supply to said carbureting passage and means for operating said valve by the movement of said suction operated valve.

5. In a device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage provided with a suction controlled valve, a source of lubricant supply, a conduit extending from said supply to the carbureting passage, a valve disposed in said conduit provided with a valve stem, and means cooperating with said valve stem for opening said valve by the movement of said suction operated valve.

6. In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto provided with a suction controlled valve, a source of lubricant supply, a conduit extending from said source of supply to said charge forming device, a valve casing disposed in said conduit having a valve normally held in closed position and means for opening said valve by the opening movement of said suction operated valve.

'7. In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and charge forming device connected thereto provided with a suction controlled valve, a source of lubricant supply, a conduit extending from said supply to said charge forming device, a Valve casing arranged within said conduit having a valve normally held in closed position and a cam operated by the movement of said suction operated valve for engaging the stem of said valve for moving said valve into open position to allow the lubricant to pass from the source of supply into said charge forming device.

8. In a device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage provided with a pivoted suction controlled valve, a valve casing disposed adjacent said charge forming device provided with a normally held closed valve, a source of lubricant supply, said valve casing being in communication with said source of supply and the charge forming device and a connection between said valve and the suction operated valve for opening said valve when said suction operated valve moves into open position.

9. A device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination tion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage provided with a suction controlled valve, a valve casing provided with a spring actuated valve normally held in closed position arranged adjacent said charge forming device, a source of lubricant supply, said valve casing being in communication with said source of lubricant supply and the carbureting passage of said charge forming device and a connection between said valve and the suction operated valve of said charge forming device for moving said valve into open position after the suction operated valve moves a predetermined distance.

10. In a device for lubricating the cylinders,

pistons and valves of an internal combustion engine, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage provided with a piv- I oted suction controlled valve, a source of lubricant supply, a conduit extending from said source of supply to said carbureting passage, a valve casing arranged in said conduit having a valve normally held in closed position provided with a stem and a cam carried by said suction operated valve cooperating with said stem for moving said valve into open position as the suction operated valve moves into open position for supplying lubricant to the carbureting passage.

11. In a device for lubricating the cylinders, pistons and valves of an internal combustion engine, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage and provided with a suction controlled valve, a valve casing disposed adjacent said charge forming device having a spring actuated valve mounted therein provided with a stem extending into said carbureting passage, a flexible connection between said Valve stem and the suction operated valve, a connec tion between said valve casing and the carbureting passage, a source of supply, a conduit connecting said source of supply to said valve casing, said conduit being subjected to the suction of the carbureting passage so as to supply lubricant thereto when the suction operated valve is moved into open position.

12. In a device for lubricating the cylinders, pistons and valves of an internal combustion englue, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto having a carbureting passage and provided with a sucwith an internal combustion controlled valve, a valve casing disposed adjacent said charge forming device having an outlet in connection with the carbureting passage below said suction operated valve, a valve mounted in said valve casing having a stem extending through the outlet of said casing, a flexible connection between said valve stem and said suction operated valve, a source of lubricant supply, a conduit extending from said source of supply to said valve casing whereby lubricant will be supplied to the carbureting passage as the suction operated valve of the charge forming device is moved into open position.

13.v In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto provided with a carbureting passage having a pivoted suction operated valve, a cam carried by the pivot of said suction operated valve, a source of lubricant supply in communication with said carbureting passage, a valve for normally closing communication between said source of supply and said carbureting passage, said valve having a stem adapted to be engaged by said cam for opening said valve when the suction operated valve is moved into open position a predetermined distance.

14. In a lubricating system for internal combustion engines, the combination with an internal combustion engine having an intake manifold and a charge forming device connected thereto provided with a carbureting passage having a suction operated valve mounted therein, said valve having a pivoted valve stem, a source of lubricant supply in communication with said carbureting passage through a valve controlled passage and a cam carried by the valve stem of said suction operated valve for actuating said valve to allow lubricant to pass from the source of supply to said carbureting passage.

REA P. WRIGHT. 

